{"schema":"threatline.record/2","record":{"id":"CVE-2026-106550","aliases":[],"summary":"CVE-2026-106550","details":"Mozilla's Node-convict (version 6.2.2 and later) is vulnerable to a Denial of Service vulnerability caused by incomplete prototype‑pollution protections in config.set(). An attacker controlling the configuration key can write arbitrary properties to constructor.<key>, which walk() resolves to the global Object function. This allows overwriting core JavaScript methods such as Object.assign, leading to persistent process-wide failures and requiring a restart. The issue bypasses existing filters that only block constructor.prototype.* and __proto__.*. Exploitation requires an endpoint that forwards attacker-controlled keys into config.set().","categories":["Unclassified"],"product":"Node-convict","vendor":"Mozilla","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-106550","source_modified_at":"2026-10-07T19:33:03.505Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Node-convict","vendor":"Mozilla","versions":[{"status":"affected","version":"6.2.2"}],"defaultStatus":null}],"fixed_versions":[],"cvss":7.5,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00284,"percentile":0.19825,"score_date":"2026-10-23"},"published_at":"2026-10-06T20:09:55.919Z","modified_at":"2026-10-07T19:33:03.505Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-106550","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-07T19:33:03.505Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-106550","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/mozilla/node-convict"},{"source":"CVE List","url":"https://github.com/tomasilluminati/security-research/blob/main/CVE-2026-106550/README.md"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-07T15:05:14.037126Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-07T19:33:03.505Z","content_hash":"6e075baf3a33745e765d3f7ae73b68b695d270c63df11890daf2e37357d0492f"}}